The midbrain converts temporal phase-locking codes into a mean firing-rate profile for speech.

Evidence

This profile of a temporally coded measure is transformed into a mean rate profile in the midbrain (inferior colliculus, IC), where neurons are sensitive to low-frequency fluctuations. — Dijk, Pim van, Physiology, Psychoacoustics and…, 5469

Categorization

• DEFINE: Explains how temporal coding in the auditory nerve becomes rate coding in the inferior colliculus — key physiology concept.